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Abstract

In a current DATA NETWORK comprising one or several Communication Controllers (CC), the Data Terminal Equipments (DTE) connected by this network have to comply with one of several well-defined message formats. This system provides Dial Up Equipment (DUE) which, added to such a DATA NETWORK, allows the interconnecting DTEs, the message formatting of which does not have to comply with one of the formats imposed by the DATA NETWORK. A path from a DUE "A", connected to one CC is established to one DUE "B", connected to the same or another CC, which is transparent to the data patterns exchanged by the operation of the DTE "A" and DTE "B". The operation is similar to DIAL UP TELEPHONE NETWORK. A DTE directory allocates a DTE number to each DTE.

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United States

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English (United States)

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Transmission Sharing System

In a current DATA NETWORK comprising one or several Communication
Controllers (CC), the Data Terminal Equipments (DTE) connected by this
network have to comply with one of several well-defined message formats. This
system provides Dial Up Equipment (DUE) which, added to such a DATA
NETWORK, allows the interconnecting DTEs, the message formatting of which
does not have to comply with one of the formats imposed by the DATA
NETWORK. A path from a DUE "A", connected to one CC is established to one
DUE "B", connected to the same or another CC, which is transparent to the data
patterns exchanged by the operation of the DTE "A" and DTE "B". The operation
is similar to DIAL UP TELEPHONE NETWORK. A DTE directory allocates a DTE
number to each DTE. To initiate one connection, the dialing of the DUE "B"
number from DUE "A" provokes the setting, in the CC and over their internode
links, of a BOTH WAY VIRTUAL PATH linking DUE "A" and DUE "B". After the
dialing phase, any serial data pattern emitted by DUE "A" is transmitted with a
fixed delay to DUE "B", and vice versa. To interrupt a connection, one hang-on
procedure provokes the release of the BOTH WAY VIRTUAL PATH linking DUE
"A" and DUE "B".